Article
Chemistry, Multidisciplinary
Kaoru Kioka, Nagi Mizutani, Nobuhiko Hosono, Takashi Uemura
Summary: This paper proposes a design approach using mixed metal-organic frameworks (MOFs) as tunable stationary phases in liquid chromatography (LC). By systematically designing ligands, the pore sizes in the MOFs can be tuned. Columns packed with the MOFs and their mixed-particle/solid-solution stationary phases are prepared and tested for the retention capability of polyethylene glycol (PEG) in LC. The results demonstrate that mixed-linker solid-solution MOFs have higher retention capability compared to pure MOF stationary phases, due to their specific nanostructures.
Article
Nanoscience & Nanotechnology
Peng Hu, Jialang Hu, Hao Wang, Hao Liu, Jie Zhou, Yao Liu, Yongqing Wang, Hongbing Ji
Summary: Researchers have successfully purified ethylene using a new method, overcoming the challenge of its similar physical properties and molecular dimensions to ethane. They discovered an electrostatic-driven linker microrotation phenomenon and effectively purified ethylene using this process. This study has important implications for the purification of olefin/paraffin mixtures.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Nanoscience & Nanotechnology
Gerard Boix, Xu Han, Inhar Imaz, Daniel Maspoch
Summary: The researchers developed a new adsorbent based on a metal-organic framework composite for removing metals from water. Testing showed that the combination of CeO2@UiO-66@PES granules and activated carbon in a modified pitcher met the target reduction thresholds for various metals, indicating a promising solution for providing clean and safe drinking water.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Weize Wang, Gang-Ding Wang, Bin Zhang, Xiu-Yuan Li, Lei Hou, Qing-Yuan Yang, Bo Liu
Summary: A flexible metal-organic framework (Zn-DPNA) with a conformation change of the Me2NH2+ ions is reported for the selective capture of acetylene (C2H2) and carbon dioxide (CO2), showing favorable CO2/C2H2 separation.
Article
Chemistry, Multidisciplinary
Boris Kharisov, Oxana Kharissova, Vladimir Zhinzhilo, Julia Bryantseva, Igor Uflyand
Summary: Researchers are currently highly interested in the solid-phase extraction of organic dyes using metal-organic frameworks (MOFs). In this study, a mixed-ligand Zr-MOF was used to study the adsorption characteristics of dyes, and the possibility of dye separation using column chromatography was explored.
APPLIED SCIENCES-BASEL
(2022)
Review
Chemistry, Physical
Jun Guo, Yue Wan, Yanfei Zhu, Meiting Zhao, Zhiyong Tang
Summary: MNP/MOF composite photocatalysts exhibit excellent performance and great potential applications, especially in photocatalytic hydrogen production, carbon dioxide reduction, organic transformation reactions, and photodegradation of pollutants. The challenges and prospects in the current research are also proposed and discussed for further advancement in this hot research field.
Article
Chemistry, Multidisciplinary
Wenlei Zhang, Jichuang Wu, Wenxiong Shi, Peishan Qin, Wenfeng Lang, Xinglong Zhang, Zhida Gu, Hongfeng Li, Yun Fan, Yu Shen, Suoying Zhang, Zhongyi Liu, Yu Fu, Weina Zhang, Fengwei Huo
Summary: The article introduces a new function of metal-organic frameworks (MOFs) as an ideal model to construct structurally ordered metal promoters. The strategy of using MOFs as a model not only helps to reveal the action mechanism behind metal promoters, but also allows the anchoring of one or multiple kinds of metal promoters, especially noble metal promoters. It is demonstrated that the prepared Pd/bpy-UiO-Cu catalysts show high selectivity (>99%) in a hydrogenation reaction, thanks to the enhanced interaction between Pd nanoparticles and MOF carriers induced by Cu promoters.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
Lan Yang, Qiang Gao, Yan-Mei Zhang, Ruihan Wang, Li-Zhuang Chen
Summary: A microporous heterometal-organic framework, CuIn(ina)4, has been demonstrated to selectively enrich C2H6 over C2H4, showing high separation performance and potential as an ethylene purification material.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Feixiang Wu, Vesna Srot, Shuangqiang Chen, Mingyu Zhang, Peter A. van Aken, Yong Wang, Joachim Maier, Yan Yu
Summary: Metal fluoride (MF) conversion cathodes have the potential to be high-energy-density batteries, but face challenges such as low capacity utilization, large voltage hysteresis, and poor cycling stability. By combining metal-organic-framework (MOF) synthesis with low-temperature fluorination, CoF2@C nanocomposites were developed, providing stable electron- and ion-conducting pathways for a highly reversible conversion reaction of CoF2. This approach not only achieves high-capacity utilization, good rate capability, and long-term cycle stability in CoF2-Li batteries, but also offers a general solution for other metal fluoride-lithium batteries.
Article
Chemistry, Multidisciplinary
Xing Liu, Peixin Zhang, Hanting Xiong, Yan Zhang, Ke Wu, Junhui Liu, Rajamani Krishna, Jingwen Chen, Shixia Chen, Zheling Zeng, Shuguang Deng, Jun Wang
Summary: In this study, a novel sulfate-pillared MOF adsorbent (SOFOUR-TEPE-Zn) using the TEPE ligand with dense electronegative pore surfaces is reported for acetylene/carbon dioxide (C2H2/CO2) separation. Compared to the prototype SOFOUR-1-Zn, SOFOUR-TEPE-Zn shows a higher C2H2 uptake and reduced CO2 uptake, leading to a high C2H2/CO2 selectivity. Dynamic breakthrough experiments confirm its application feasibility and good cyclability at various flow rates. The pressure swing adsorption processes reveal a high gas recovery rate and production of high purity C2H2.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Kai Qu, Kang Huang, Jipeng Xu, Liheng Dai, Yixing Wang, Hongyan Cao, Yongsheng Xia, Yulin Wu, Weiyi Xu, Zhizhen Yao, Xuhong Guo, Cheng Lian, Zhi Xu
Summary: This study presents an electrostatic-anchoring strategy to fix the rotation of ligands in metal organic frameworks (MOF) for precise molecular sieving. The strategy significantly enhances the CO2/N-2 adsorption selectivity and exhibits outstanding performance in membrane-based separation.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Engineering, Environmental
Lan Lan, Nan Lu, Jia-Cheng Yin, Qiang Gao, Feifan Lang, Ying-Hui Zhang, Hong-Xiang Nie, Na Li, Xian-He Bu
Summary: A Co-based metal-organic framework (Co-MOF) with abundant selective binding sites demonstrates high efficiency in separating C3H8 and C2H6 from natural gas. It exhibits remarkable adsorption capacities for C3H8 and C2H6 while adsorbing only a low amount of CH4. The Co-MOF shows excellent cycling stability and has the potential to be a promising adsorbent for natural gas purification.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Chemistry, Multidisciplinary
Alec Wang, Madeline Walden, Romy Ettlinger, Fabian Kiessling, Jeremiah J. Gassensmith, Twan Lammers, Stefan Wuttke, Quim Pena
Summary: Metal-organic framework (MOF) materials have great potential in biomedical research due to their high porosity, crystallinity, and structural and compositional diversity. They have the ability to retain organic molecules, metals, and gases, and survive harsh physiological conditions. MOFs have been extensively studied for various pathologies and have shown promising performance in regenerative medicine when integrated with other biomedical materials. However, there are challenges in translating MOFs into clinically relevant medicinal products.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Physical
Jiapeng Wang, Kumar Vikrant, Ki-Hyun Kim
Summary: In this study, a high surface area nanocomposite MnO2@U6N was prepared and used as a bifunctional adsorbent-catalyst for the purification of multiple aromatic volatile organic compounds. The MnO2@U6N showed superior catalytic-adsorption activity for the removal of BTXS, and its removal potential was validated through experiments and simulations.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2024)
Review
Chemistry, Physical
Asiata Omotayo Ibrahim, Kayode Adesina Adegoke, Rhoda Oyeladun Adegoke, Yahaya A. AbdulWahab, Victoria B. Oyelami, Morenike Oluwabunmi Adesina
Summary: This review discusses the applications of metal-organic frameworks (MOFs) as novel carbonaceous nanomaterials for removing pollutants from various environments, highlighting promising MOF adsorbents and emphasizing the importance of their reusability as well as addressing challenges and prospects.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Nanoscience & Nanotechnology
Hong -Bin Luo, Fang -Ru Lin, Zhi-Yuan Liu, Ya-Ru Kong, Karam B. Idrees, Yangyang Liu, Yang Zou, Omar K. Farha, Xiao-Ming Ren
Summary: In this study, mixed matrix membranes were prepared by incorporating Zr-MOFs into polymer matrices, wherein MOF-808 provides highly active catalytic sites, hydrophilic PVP helps retain water for promoting hydrolytic reaction, and Im serves as a base for catalytic site regeneration. The mixed matrix membranes exhibited excellent catalytic performance for the solid-state hydrolysis of DMNP under high humidity, representing a significant step towards the practical application of Zr-MOFs in chemical protective layers against nerve agents.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Bhajan Lal, Karam B. B. Idrees, Haomiao Xie, Courtney S. S. Smoljan, Saman Shafaie, Timur Islamoglu, Omar K. K. Farha
Summary: We report the synthesis of a zinc-based MOF containing a three-dimensional (3D) linker, which shows high thermal stability for the separation of hexane isomers. The incorporation of the 3D linker enhances the structural stability and provides precise pore apertures/channels. This work represents a significant milestone in the construction of stable Zn-based MOFs and the incorporation of 3D linkers for challenging separations.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Inorganic & Nuclear
Georgina P. P. Robertson, Sara Mosca, Celia Castillo-Blas, Florencia A. A. Son, Omar K. K. Farha, David A. A. Keen, Simone Anzellini, Thomas D. D. Bennett
Summary: Recent research has shown a shift in focus from crystalline high-porosity metal-organic frameworks (MOFs) to exploring their amorphous counterparts. Applying pressure to a crystalline MOF can lead to amorphization, reducing surface area. Understanding the MOFs' response to pressure is crucial. Three MOFs with varying pore sizes were investigated under high pressure, showing partial crystallinity above 10 GPa. The survival of crystallinity at extreme pressures demonstrates the importance of high-pressure characterization of known structures.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Shujing Hou, Fusheng Liu, Haomiao Xie, Sylvia L. Hanna, Karam B. Idrees, Chenghui Zhang, Xingjie Wang, Yongwei Chen, Peng Li, Omar K. Farha
Summary: This study investigates the structure-modulator relationship in the synthesis of thorium-based MOFs using different modulators and the ligand H4ATC. The results show that formic acid and acetic acid compete with H4ATC to form NU-52 and NU-54, while trifluoroacetic acid and benzoic acid result in NU-53 and NU-55. The identity and amount of modulator play a crucial role in determining the Th-based MOF structures with H4ATC as the coordinated ligand.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Wei Gong, Xinfa Chen, Kira M. Fahy, Jinqiao Dong, Yan Liu, Omar K. Farha, Yong Cui
Summary: The interplay of primary organic ligands and inorganic secondary building units has led to the development of metal-organic frameworks (MOFs) in reticular chemistry. This study explores the role of ligand chirality in controlling the synthesis of different MOFs. The findings show that ligand chirality impacts both the structure and function of the MOFs, highlighting its importance in reticular chemistry.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Shengyi Su, Xuhao Zhou, Xinyi Gong, Karam B. Idrees, Kent O. Kirlikovali, Timur Islamoglu, Omar K. Farha, Nathan C. Gianneschi
Summary: In this study, micro-porous synthetic allomelanin (AM) was used as a porous coating on the surface of the MOF material UiO-66. The core-shell structured AM@UiO-66 nanoparticles were successfully prepared through in situ surface-constrained oxidative polymerization. Nitrogen sorption isotherms confirmed that the AM coating did not affect the pore size and porosity of UiO-66. It was demonstrated that by tuning the thickness of the AM coating, the AM@UiO-66 composites exhibited excellent hexane isomer separation selectivity and storage capacity.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Chung -Wei Kung, Ken-ichi Otake, Riki J. Drout, Subhadip Goswami, Omar K. Farha, Joseph T. Hupp
Summary: Starting with ferrocyanide ions in acidic aqueous solution, cyano-ferrate(II) species are post-synthetically grafted to the nodes of a mesoporous zirconium-based MOF, NU-1000. The grafting occurs by substitution of cyanide ligands by node-based hydroxo and oxo ligands rather than by substitution of node aqua ligands by cyanide ligands as bridges between Fe(II) and Zr(IV). The installed moieties yield a broad absorption band that is tentatively ascribed to iron-to-zirconium charge transfer. Consistent with Fe(III/II) redox activity, a modest fraction of the installed iron complexes are directly electrochemically addressable.
Article
Multidisciplinary Sciences
Isaac D. Lutz, Shunzhi Wang, Christoffer Norn, Alexis Courbet, Andrew J. Borst, Yan Ting Zhao, Annie Dosey, Longxing Cao, Jinwei Xu, Elizabeth M. Leaf, Catherine Treichel, Patrisia Litvicov, Zhe Li, Alexander D. Goodson, Paula Rivera-Sanchez, Ana -Maria Bratovianu, Minkyung Baek, Neil P. King, Hannele Ruohola-Baker, David Baker
Summary: Due to evolutionary selection, naturally occurring protein assemblies have subunits that fit together with substantial shape complementarity to create optimal architectures for function. We present a top-down reinforcement learning-based design approach that utilizes Monte Carlo tree search to sample protein conformers while considering overall architecture and specific functional constraints. Cryo-electron microscopy structures of designed disk-shaped nanopores and ultracompact icosahedra closely resemble computational models. The icosahedra facilitate high-density display of immunogens and signaling molecules, enhancing vaccine response and angiogenesis induction. Our approach allows for top-down design of complex protein nanomaterials with desired properties and exemplifies the power of reinforcement learning in protein design.
Article
Engineering, Environmental
John Hegarty, Benjamin Shindel, Daria Sukhareva, Michael L. Barsoum, Omar K. Farha, Vinayak Dravid
Summary: This study investigates the use of new anions in ion-exchange resins for moisture-swing capture of CO2 and compares their performance thermodynamically and kinetically. The findings contribute to the improvement of negative emission technologies and sorbent materials, and provide insights relevant to gas separation.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Fanrui Sha, Haomiao Xie, Florencia A. Son, Kevin S. Kim, Wei Gong, Shengyi Su, Kaikai Ma, Xiaoliang Wang, Xingjie Wang, Omar K. Farha
Summary: Proteins play important roles in various industries, but their fragility outside of cells limits their potential. Encapsulating proteins in solid materials can enhance their stability, but there is still room for improvement in understanding their interactions with synthetic hosts.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Physical
Zhe Li, Shunzhi Wang, Una Nattermann, Asim K. Bera, Andrew J. Borst, Muammer Y. Yaman, Matthew J. Bick, Erin C. Yang, William Sheffler, Byeongdu Lee, Soenke Seifert, Greg L. Hura, Hannah Nguyen, Alex Kang, Radhika Dalal, Joshua M. Lubner, Yang Hsia, Hugh Haddox, Alexis Courbet, Quinton Dowling, Marcos Miranda, Andrew Favor, Ali Etemadi, Natasha I. Edman, Wei Yang, Connor Weidle, Banumathi Sankaran, Babak Negahdari, Michael B. Ross, David S. Ginger, David Baker
Summary: In this study, a computational approach was developed to design protein crystals with high accuracy. The crystals were self-assembled from specifically designed oligomers and showed high porosity and stability. This research provides a powerful platform for biological materials engineering.
Article
Chemistry, Physical
Wenjie Zhou, Yein Lim, Haixin Lin, Sangmin Lee, Yuanwei Li, Ziyin Huang, Jingshan S. Du, Byeongdu Lee, Shunzhi Wang, Ana Sanchez-Iglesias, Marek Grzelczak, Luis M. Liz-Marzan, Sharon C. Glotzer, Chad A. Mirkin
Summary: This study successfully assembled colloidal quasicrystals by exploiting the geometry of nanoscale decahedra and the programmable bonding characteristics of DNA immobilized on their facets. The process is enthalpy-driven, works over a range of particle sizes and DNA lengths, and is made possible by the energetic preference of the system to maximize DNA duplex formation and favor facet alignment. The resulting colloidal quasicrystals exhibit specific structures with stacking disorder providing thermodynamic stability.
Article
Chemistry, Multidisciplinary
Kaikai Ma, Dahee Jung, John J. Mahle, Sylvia L. Hanna, Timur Islamoglu, Isil Akpinar, Gregory W. Peterson, Omar K. Farha
Summary: Integrating metal-organic frameworks onto textile fibers enables the preparation of solid catalysts for practical protective applications such as the degradation of chemical warfare agents. Multiple variables that affect the catalytic activity and permeability of an MOF-polymer fiber composite have been systematically studied. Activation methods, MOF mass loadings, and MOF particle size are the most crucial parameters that affect the resulting composite.
CELL REPORTS PHYSICAL SCIENCE
(2023)
Review
Chemistry, Multidisciplinary
Zhijie Chen, Kent O. Kirlikovali, Le Shi, Omar K. Farha
Summary: Functional porous metal-organic frameworks (MOFs) have great potential applications in various fields, but their successful implementation depends on their stability. In this article, we summarize the progress in rational design and synthesis of stable and controllable porous MOFs. The reticular synthesis approach allows for the top-down design of stable MOFs with targeted networks and pores. We highlight the synthesis and applications of stable MOFs based on high valent metal ions with carboxylate ligands and low valent metal ions with azolate linkers.
MATERIALS HORIZONS
(2023)
Article
Chemistry, Multidisciplinary
Sylvia L. Hanna, Omar K. Farha
Summary: Uranium, a relatively unexplored element, has rich chemistry and shows promise for various powerful functions such as small molecule activation and photocatalysis. By using metal-organic frameworks (MOFs), researchers have harnessed the properties of uranium and discovered remarkable structures and unique properties not observed in traditional transition metal MOFs. Theoretical calculations have also complemented structure-property studies in uranium MOFs. In this Perspective, the energy-structure-property relationships in U-MOFs are summarized to enable a deeper understanding of chemical phenomena and elevate the field to targeted discovery.